{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TTIHMH2EDTK6QF6LF75I7EG7Y6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0dea417aa6b8300d293c58829699c216b9c0f6263ecbf77b7a79d1c759b68bfa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-12-04T06:00:01Z","title_canon_sha256":"f6aa1e783fa27f9cbbe04757bd75e7d0c87917eb10caf0ade311c6e446e8e7e9"},"schema_version":"1.0","source":{"id":"1312.1032","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.1032","created_at":"2026-05-18T02:55:13Z"},{"alias_kind":"arxiv_version","alias_value":"1312.1032v1","created_at":"2026-05-18T02:55:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.1032","created_at":"2026-05-18T02:55:13Z"},{"alias_kind":"pith_short_12","alias_value":"TTIHMH2EDTK6","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TTIHMH2EDTK6QF6L","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TTIHMH2E","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:d41556d01a0e27eca1ba145dfe699057f63398720f245da20c019edb0999d39b","target":"graph","created_at":"2026-05-18T02:55:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present a method to extract the spectrum of two-particle systems on the lattice from wave functions computed in lattice simulations. The energies of the Hamiltonian eigenstates are extracted from the eigenvalues of a matrix, similar to a potential, constrained by the wave functions. This method is compared with the traditional variational method in the isospin 2 $\\pi\\pi$ system.","authors_text":"Bruno Charron, for HAL QCD Collaboration","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-12-04T06:00:01Z","title":"A comparative study of two lattice approaches to two-body systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1032","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d6b9a68bcbdbee79ba5a2eac4a7ad400a3f99e807683115c6eee976ebbbb639f","target":"record","created_at":"2026-05-18T02:55:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0dea417aa6b8300d293c58829699c216b9c0f6263ecbf77b7a79d1c759b68bfa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-12-04T06:00:01Z","title_canon_sha256":"f6aa1e783fa27f9cbbe04757bd75e7d0c87917eb10caf0ade311c6e446e8e7e9"},"schema_version":"1.0","source":{"id":"1312.1032","kind":"arxiv","version":1}},"canonical_sha256":"9cd0761f441cd5e817cb2ffa8f90dfc79e1e021b736355e5b5151e608d94170a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9cd0761f441cd5e817cb2ffa8f90dfc79e1e021b736355e5b5151e608d94170a","first_computed_at":"2026-05-18T02:55:13.150890Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:55:13.150890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZQOXeqo8y+IxpCklG2od0U4KXfVzp6UMrG159WIlE2jNxp01FrQtmjtD9qHhpDPNlrS4b1j41IzaAC9B16R4Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:55:13.151966Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.1032","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6b9a68bcbdbee79ba5a2eac4a7ad400a3f99e807683115c6eee976ebbbb639f","sha256:d41556d01a0e27eca1ba145dfe699057f63398720f245da20c019edb0999d39b"],"state_sha256":"036da1488cc57d169c68f54d678bc7d813d1c3c63dd03ee8be63a3100cdeecf4"}